Digital Commons Network^™

The Female Volunteer Pool: Changes And Implications For The Future, Joan R. Katz

Theses

Unavailable.

Wholistic Approach To Dental Health, Janice Franklin

Theses

Unavailable.

The Measurement Of Rms Granularity Of Black And White Photographic Materials Using A Visual Comparison Technique, Jack C. Smith

Theses

A method is described for measuring the RMS granularity of black and white photographic materials at a diffuse density of 1.0 using a visual comparison technique. A set of standard granularity patches was prepared for use with a comparison microscope. Samples with known values of RMS granularity were evaluated by observers and it was found that the observer -measured values of granularity correlated well with the actual values of granularity. Some discrepancies from the expected relationship between observer-measured values and actual values are discussed.

Student Development & Cultural Assessment In An Educational Environment, Penelope Joan Herdfelder

Theses

Unavailable.

The Utica Club Show, Frank Leto

Theses

None provided.

Adsorption Capabilities Of Adsorbents For Selected Toxic Air Pollutants, Richard Michael Vaccaro

Theses

The relative adsorption capacities of seven toxic, volatile organic air pollutants of either proven or suspected carcinogenic potential were tested on various adsorbents. Tests were run at flow velocities similar to those set in field sampling. This allows for extrapolation of test results to actual ambient air sampling systems. Experimentation was performed using a gas chromatograph (G.C.) equipped with a flame ionization detector. Sample introduction was carried out using the "displacement method" where the sample is introduced to the adsorbent cartridge as a plug.

Incipient elution volumes (V_N), normalized for bulk adsorbent packing volume, were obtained at various …

Studies On The Lith Development Of A Silver Iodobromide Emulsion, Larry Zurbrick

Theses

The lithographic development of a silver iodobromide emulsion with thiocyanate substituted for bromide in a lith developer formulation showed differences in behavior with regard to induction time and maximum rate of development at equal levels of normality. An experiment was designed with development time, halide concentration, and exposure level as the variables with maximum rate of development, time to reach 0.20 optical density (induction time), and slope at 0.40 optical density as the response parameters. The maximum rate of development with the developer containing bromide was found to be significantly dependent upon exposure level and not significantly dependent upon bromide …

Electric Field Enhancement Of Efficiency In Autoradiographic Exposures, Harvey Smith

Theses

An external electric field was applied during autoradiographic exposures in an attempt to influence the path length and trajectory of image forming beta particles. Various techniques were employed to maximize the electric field applied. No evidence was found for increases in efficiency of image formation within the receiving emulsion, up to a field strength of 7 x 10 volts/cm.

Modulation Transfer Function Of Image Motion Due To Operator Vibration, Venkatraman Nagaswami

Theses

The displacement path of a hand-held photographic camera is studied at low shutter speeds when operated by different observers. Using the Fourier method, the average power spectrum of hand vibration is obtained. The Modulation Transfer Function of image motion for an average observer at various exposure times is theoretically predicted.

A Masters Program In Management Psychology For Industry: A Study, Donald J. Tabone

Theses

This study explores the design and justification of a graduate program in Management Psychology tailored to meet the evolving needs of industry. Donald J. Tabone investigates the limitations of traditional Master of Business Administration (MBA) programs, noting their heavy emphasis on technical subjects such as accounting, finance, and marketing, with minimal focus on human resource development and psychological principles vital to effective management. The paper argues that as organizations become increasingly complex, there is a growing need for leaders skilled in interpersonal dynamics, motivation, behavior analysis, and humanistic management approaches.

The study begins with a comparative analysis of MBA curricula …

The Editorial Decision In Photography, Lyn Adams

Theses

None provided.

Found Television Images, Janice Hope Meyers

Theses

None provided.

Social Integration Of Learning-Disabled Students In Mainstream Programs Where The Method Of Instruction Is Divergent Questioning, Phyllis Bigby

Theses

This paper concentrates on an approach to enhance the social integration of learning- disabled students in regular classrooms. The chief problem is to design learning experiences which stimulate the development of social integration in mainstream programs. What effect does method of instruction have on positive affective states of learning- disabled students when mainstreamed?

After defining terms, the literature review includes studies on l)divergent questioning and its relationship to the thinking processes, 2)methods of instruction, 3)actual and perceived peer status of learning- disabled students in regular classrooms.

The research design will be experimental, using the classroom situation and primary students. The …

Continuous Fractionation Of Protein Mixtures By Ph-Parametric Pumping, Yuk-Wei Wong

Theses

Continuous pH-parametric pumping separations of a haemoglobin - albumin - CM Separose system were experimentally investigated. The parapump system has a feed, containing the protein mixture to be separated, introduced alternately to the top and bottom of the chromatographic column. The top and bottom products are withdrawn from the apparatus during the bottom and top feed respectively. It is shown that under certain conditions the pH-driven parametric pump has the capacity for removal of a protein component from one product fraction and large enrichment in the other fraction. Moreover, the continuous process can be operated with a large feed throughput.

A Low Frequency Sine Wave Camera, Russell Palum

Theses

An optical system using spherical and cylindrical optics can convert area-modulated spatial sinusoidal targets to intensity-modulated spatial sinusoidal images. A specific system was analyzed with a spot diagram. System response to 30 cycles-mm~l is predicted. The system mechanical tolerances were determined on the basis of modulation transfer function (MTF) calculations. A mechanical structure which would maintain these tolerances was designed and built.

The Effects Of Sulfur Sensitization And Stabilization By 4-Hydroxy-6-Methyl-1,3,3a,7-Tetraazaindene On Hydrogen Sensitization Of A Photographic Emulsion, David Lyon

Theses

Hypersensitization using H2 gas is the most recent addition to the techniques available to reduce the effects of low intensity reciprocity law failure. Because of the presence of addenda in all commercially available emulsions, the interactive effects of hydrogen sensitization with a common stabilizer (4-methyl-6-hydroxy-1,3,3a,7-tetraazaindene) and a common form of chemical sensitization (Sulfur Sensitization) alone and together were investigated. A primitive, single jet emulsion was coated with and without the above addenda. Samples were paired and either treated to a hydrogen baking process at 65°C for 20 minutes, or left untreated. Sensitometric exposures were made in a room air environment …

The Modification Of Simple Images By Fourier Transform Manipulation, Noel Chavez

Theses

Knowledge of how an image is changed by a given modification of its Fourier transform is important when attempting to find solutions to problems in image processing. Several types of filters were used to modify the Fourier transforms of an edge and a bartarget. The images were reconstructed from the modified transforms to determine the change produced by a given modification. Various regions of the Fourier transform determine specific characteristics of the image. The amplitude of the low frequencies controls the form and average level of the image, while the amplitude of the high frequencies effects sharp transitions and noise.

Design And Evaluation Of A Stepped Diaphragm Intensity Scale Graphic Arts Sensitometer, Patrick Meehan

Theses

An Intensity Scale Sensitometer for testing the photographic response of Graphic Arts materials was built and evaluated. The sensitometer utilizes a stepped area diaphragm and a cylindrical lens to produce a stepped illuminance distribution at the film plane. Both tungsten and pulsed xenon lamps are provided. A computer aided study was used to find the optimum lamp position with respect to the reflector. A scanning aperture type shutter located at the stepped diaphragm and a knife edge aperture located at the lens are used to control exposure duration and intensity. The main advantage of this sensitometer is the production of …

An Examination Of The Interface Between Cross-Cultural Trainers And The Business Community In The United States, From The Perspective Of The Trainer, Alexander Patico

Theses

This paper is the product of a particular stage in its author's professional and intellectual development . Its purpose is to use the special vantage point of a (relatively) disinterested observer, in order to form a novel picture of a particular population, comprised of those persons who are engaged in cross-cultural training--more especially, those who, as outside consultants , seek or maintain a clientele among members of the U.S. business community. I believe it likely that this viewpoint could not as readily be taken by one who is already fully involved in the daily practice of cross-cultural training.

Every effort …

A Three-Dimensional Kinematic Model Of The Human Knee, Wayne Ke-Wung Li

Theses

This thesis describes two kinematic models of human knee which may be used to study the motion of the knee and the forces in the ligaments of the knee. In one model, the ligaments are simulated by rigid links connected to links representing the articulating bones at the centroids of the areas of insertion of the ligaments. The condylar higher pair connections are simulated by equivalent linkages connected by resolutes. In an advanced model, the rigid ligament links are replaced by springs.

The IMP procedure, a powerful kinematic linkage analysis method, is employed to study the motion and forces in …

The Preparation, Spectra, And Conformations Of Cis, Cis-, Cis, Trans-, And Trans, Trans- Dipropenyl Ethers, Helen C. Hollein

Theses

Cis,cis-dipropenyl ether was prepared by potassium t-butoxide catalyzed rearrangement of diallyl ether in diglyme solution. Pyrolysis was used in an attempt to produce an isomeric dipropenyl ether mixture with a high percentage of the less stable trans,trans isomer; 21.6% trans,trans-dipropenyl ether was produced by pyrolysis at 395°C, but formation of an azeotropic byproduct in significant quantities negated the feasibility of this synthesis. A mixture of 45.7% cis,cis-, 43.6% cis,trans-, and 10.7% trans,trans-dipropenyl ether was produced by mercuric acetate catalyzed isomerization at 80°C, and the mixture was separated on a Nester/Faust spinning band column of two hundred theoretical plates.

Physical properties, …

A New Mathematical Model For Nephron Macromolecular Selectivity, John Anthony Domiter

Theses

A mathematical model describing the displayed selectivity of the kidney nephron to macromolecules of varying particle size is presented. Diffusion and electrical forces are considered to be the sole mechanisms of transfer. The mass transfer principles responsible for selectivity are considered to occur within the capillary structure, and not within the membrane wall. A charge is assumed to be characteristic of the macromolecule and the membrane wall. Models describing both charged and uncharged solutes are developed.

A non-linear least squares technique, developed by Marquardt, is used to curve fit the derived functions to data relating fractional clearances of dextran and …

A Study On The Growth And Asparaginase Production Of Vibrio Succinogenes In A Chemostat, Preston David Krautheim

Theses

A continuous fermentation assembly was constructed and studies on the growth of the organism, Vibrio succinogenes, and its production of asparaginase was conducted. Results were compared with that already performed on a batch system and showed that a continuous fermentation produced 31.83 I.U. enzymes/mM ammonium formate compared to 17.4 I.U. enzyme/mM formate for batch.

Some of the runs performed indicated that the organism was washing out or giving very low specific growth rates. It was decided that this was not due to operational parameters of the chemostat, but possible chemical contamination in the medium. With all things considered, a continuous …

Axisymmetric Air Jet Impinging On A Convex Hemispherical Plate, David C. Chan

Theses

Experimental investigation was conducted on an axisymmetric, submerged air jet impinging normally on a smooth convex hemisphere. Three nozzle diameters of 0.5" (12.7mm), 0.375" (9.525mm) and 0.25" (6.35mm) were used and tests were run at Reynolds number range of 14,700 to 84,000.

The results obtained in the free jet and deflection zones were found to confirm the works of previous investigators. As for the fully developed wall jet region, the following points are noted:

1. The maximum wall-velocity decay was found to possess a slightly higher rate than that of either the flat plate or the concave hemisphere.

2. The mean velocity …

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Calculations Of Isobaric Phase Enthalpy Differences For Binary Systems From Vapor-Liquid Equilibrium Data, Steven Merrill Harvey

Theses

Equations relating isobaric vapor-liquid equilibrium data to heats of vaporization are useful in testing the thermodynamic consistency of experimental VLE data and in the design of distillation equipment. Several researchers have proposed such equations based on the Gibbs-Duhem equation. At low pressures, simplified versions of these equations were successfully used to test the consistency of published VLE and enthalpy data. At high pressures, equilibrium phase enthalpy differences were calculated from rigorous equations using a modified form of the Redlich-Kwong equation to calculate fugacity coefficients. As expected, the relative error of using the simplified equations was found to increase with increasing …

An Equilibrium Theory Of The Ph-Parametric Pump, Charles Omotayo Kerobo

Theses

Parametric pumping, both batch and continuous, and cycling zone adsorption are theoretically scrutinized for various operating conditions by using the concept of equilibrium stages. The model system is Haemoglobin-Albumin-CM sepharose, a physical system in which a local equilibrium between liquid and sorbent in the layers of the separating medium in the column is characterized. For the batch process, the steady-state concentrations in both top and bottom reservoirs are found to be independent of the number of equilibrium stages, provided that a = 1 (i.e., number of transfer steps/number of stages).. For continuous parapump process, separation is enhanced with decreasing top …

Comparison Of Bromide, Benzotriazole, And Phenyl Mercaptotetrazole And Their Effect On Photographic Development, James Kretchmer

Theses

A comparison of three commonly used antifoggants was made. Their effect on the formation of fog and image density development was studied using a rate factor of development. This rate factor is defined as the slope of the curve for density-log development time. Bromide and benzotriazole were found to have no effect on the rate of development whereas 1-phenyl-5-mercaptotetrazole was found to significantly reduce the rate of development. Bromide and benzotriazole were found to cause a suppression of image density only by increasing the time before density formation begins.

Minimization Of Unwanted X-Ray Exposures On Conventional Photographic Films By Developer Modification, Michael L. Rudolph

Theses

Experiments were done to reduce the influence of unwanted X-ray exposures on Kodak Plus-X film. Variations of surface developer components showed no favorable results. The concentration of KBr was varied up to 10 grams per liter with again, no favorable results. The incorperation of benzitriazole decreased base plus fog from values of .81 to .56 with a significant decrease in speed. Phenyl mercaptotetrazole was extreamly effective in decreasing both base plus fog and speed.

Noise Reduction By Multiple Image Printing, William Mcdonnell

Theses

A method of noise reduction by the successive partial printings of identical negatives was investigated. Image enhancement in terms of granularity reduction and resolution increase was obtained.

An Investigation Of The Emotional Connotations Of Printing Types, Michael Blum

Theses

This thesis addresses itself to the problem of understanding the emotional connotations of printing types. It is hypothesized that there is a model useful in predicting reactions to a given type style based on atmosphere value and usage. The majority of the literature on this subject is nonempirical. It is characterized by the author's stating their opinions with little or no attempt to validate them. The empirical literature shows that there is an emotional connotation associated with particular type faces. These studies have not shown, however, the importance of this connotation in terms of appropriate choice of type faces . …